ezLCD on the BS2P
El Paisa
Posts: 375
The attached program Demo_1.bsp shows some of the graphics features of the ezLCD graphics Display.
The ezLCD is by far the best graphics Display for Stamp Community not only in features but in price.
The ezLCD is by far the best graphics Display for Stamp Community not only in features but in price.
Comments
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Jon Williams
Applications Engineer, Parallax
Dallas Office
Yahoo Groups ezlcd /files/firmware/beta/ezLCDcms.pdf
The resolution was reduced to comply with the upload limitations.
Is this picture coming from a BS2p?
It looks great but how is the memory in the BSP organised, how does this picture fit in the 26 Bytes of RAM?
Or is it in an EEPROM slot, retrieved with READ and SEROUT.
Very nice! I would like to hear more about it.
Regards
Klaus de Jong
I looked at the code and the display seems to support drawing commands (sent via SEROUT) that allow that image to be constructed -- so it doesn't have to be pixel-mapped into the BASIC Stamp.
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Jon Williams
Applications Engineer, Parallax
Dallas Office
Post Edited (Jon Williams) : 9/18/2004 7:56:46 PM GMT
So it is an intelligent display, you use drawing commands to get it alive.
That's an interesting idea. I looked at black and white graphical displays over here but I had to stop this project because of the large memory usage of the displays. These things just where not the right thing for a Stamp.
Klaus
It is an intelligent display.
It is a 240x160 pixels, 255 colors.
You can also display BMP files but with the Stamp is hard because of space.
I used it with an Atmel ATmega128 and can read BMP files.
The display has an internal 80KB ROM to store stuff. I believe in the future they plan to have an 1MBx8 ROM.
My first example shows how to draw Lines, Boxes, Circles, Filled Boxes, Circles, Rotate text and has 5 different fonts/sizes.
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Can you give an indication of the price of an ezLCD?
Thanks in advance,
Klaus
They normally are shipped programmed for 11520 Baud but you can program it for 9600 Baud.
For that you need the Evaluation Board.
Once the LCD is programmed for 9600 Baud you do not need the Evaluation Board.
They are planned to start shipping the device already programmed for 9600 Baud.
In this case, buy only the LCD not the Eval Board.
By the way, you can control the ezLCD using the I2C network.
In my case, I bought two LCDs and only one Evaluation Board.
You have to understand that I got nothing to do with those peoples.
I like the device very much.
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Can you help me, I have the board of education and the ezlcd001, I am just starting using both for the first time and I really don't know how to connect them, if you could help me I will really apriciate it a lot.
Regards
Hvilla
The connections from the ezLCD-004 to the BS2 It·are quite simple.
pin 19 of CN1·receives command data from the bs2
pin 20 of CN1 sends touch screen data.
You can connect directly from the CN1 to the pins of your selection.
Do not forget to connect the grounds.
Just remember to change in the program the pins numbers.
Good luck.
Any more questions?, just ask.·
It is a 6 inches screen size.
The resolution of the ezLCD-004 is 320x240 pixels, 16 bit color palette.
Have a 1MB·internal EEPROM to store icons, BMPs files.
Have a touch screen resistive type.
Very soon the build-in MMC card writer/reader will be activated to store even more graphics data.
I have been using this display with Parallax BS2P, Atmel ATmega128, and lately with the Parallax Propeller.
What types of projects are you using them in? Hobby, industrial, commercial?
Thanks.
Just having fun and learning.
I am sorry I misread your post.
The attached file shows some info about the operation of the ezLCD-001 and a BS2P.